1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
package org.eclipse.viatra.solver.data.util;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import static org.eclipse.viatra.solver.data.util.CollectionsUtil.*;
import static org.junit.jupiter.api.Assertions.assertEquals;
class CollectionsUtilTests {
List<Integer> list10 = List.of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
List<String> listTen = List.of("1", "2", "3", "4", "5", "6", "7", "8", "9", "10");
private static <T> void compare(Iterable<T> a, Iterable<T> b) {
List<T> listA = toList(a);
List<T> listB = toList(b);
assertEquals(listA, listB);
}
private static <T> List<T> toList(Iterable<T> a) {
List<T> result = new ArrayList<T>();
Iterator<T> iterator = a.iterator();
while (iterator.hasNext()) {
result.add(iterator.next());
}
return result;
}
@Test
void testFilterEven() {
compare(List.of(2, 4, 6, 8, 10), filter(list10, (x -> x % 2 == 0)));
}
@Test
void testFilterOdd() {
compare(List.of(1, 3, 5, 7, 9), filter(list10, (x -> x % 2 == 1)));
}
@Test
void testFilterFalse() {
compare(List.of(), filter(list10, (x -> false)));
}
@Test
void testFilterTrue() {
compare(list10, filter(list10, (x -> true)));
}
@Test
void testFilterEmpty() {
compare(List.of(), filter(List.of(), (x -> true)));
}
@Test()
void testNoSuchElement() {
Iterable<Integer> iterable = filter(list10, (x -> x % 2 == 0));
Iterator<Integer> iterator = iterable.iterator();
while (iterator.hasNext()) {
iterator.next();
}
Assertions.assertThrows(NoSuchElementException.class, () -> iterator.next());
}
@Test()
void mapTest() {
compare(listTen, map(list10, x -> x.toString()));
}
@Test()
void mapEmtyTest() {
compare(List.of(), map(List.of(), x -> x.toString()));
}
}
|
